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(11)

EP 3 881 063 A1

(12)

(43) Date of publication: 22.09.2021 Bulletin 2021/38 (21) Application number: 19809573.9 (22) Date of filing: 15.11.2019

(51) International Patent Classification (IPC):  G01N 27/414(2006.01) (52) Cooperative Patent Classification (CPC): G01N 27/4146; G01N 27/4145 (86) International application number: PCT/GB2019/053248 (87) International publication number: WO 2020/099890 (22.05.2020 Gazette 2020/21)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 16.11.2018 GB 201818729 (71) Applicant: Cambridge Enterprise Limited University of Cambridge Cambridge CB3 0GT (GB)	(72) Inventors: WANG, Ruizhi Cambridge Cambridgeshire CB2 1TN (GB) STERN, Hannah Cambridge Cambridgeshire CB2 1TN (GB) HOFMANN, Stephan Cambridge Cambridgeshire CB2 1TN (GB) (74) Representative: Neusser, Sebastian  Kraus & Weisert Patentanwälte PartGmbB Thomas-Wimmer-Ring 15 80539 München 80539 München (DE)